How about full support for Durilca, SBC & WinUDA formats? These formats beat 7-zip and Winrar archives easily.

Even WinACE full support would be nice.

I use WinUda at only 18kb in size and can create sfx files by adding itself to the archive, note: winuda is packed with Upack by the same author, which i also use. Great Program, Small. ratio beats 7-zip 95% of the time, if you want to take a look, link is http://dwing.51.net/download/WinUDA.zip it uses compression based on PAQ6d2